123998193 has 12 divisors (see below), whose sum is σ = 195391248. Its totient is φ = 75150360.

The previous prime is 123998191. The next prime is 123998209. The reversal of 123998193 is 391899321.

It is a happy number.

It is not a de Polignac number, because 123998193 - 2¹ = 123998191 is a prime.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (123998191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 626155 + ... + 626352.

It is an arithmetic number, because the mean of its divisors is an integer number (16282604).

Almost surely, 2^123998193 is an apocalyptic number.

It is an amenable number.

123998193 is a deficient number, since it is larger than the sum of its proper divisors (71393055).

123998193 is a wasteful number, since it uses less digits than its factorization.

123998193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252524 (or 1252521 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 123998193 is about 11135.4475886693. The cubic root of 123998193 is about 498.6606729427.

The spelling of 123998193 in words is "one hundred twenty-three million, nine hundred ninety-eight thousand, one hundred ninety-three".